Due to a machine upgrade, I've got 2 X 8GB sticks of DDR3 RAM spare - Kingston HyperX Genesis 1600 MHz, and obviously in good condition. Unless you've got identical sticks in a machine with two empty slots, it probably wouldn't be wise to mix them with another, different pair due to instability risk, but if you're currently running a 2 X 4GB machine with two slots, these would be a perfect upgrade. They've been discontinued now, which is why I had to buy four new sticks.

Free to a good home if you can cover postage costs (should be secure really, so probably about a fiver signed-for in a padded bag), or caver post if that can possibly be construed - though I don't drive so you'd have to come here - central Sheffield.